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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '277a02de7fded3b21ecf7baede87536b62617b37a71e1cd32bc46ad76e2753e6' 
  AND token = 'DF7P3hxC9y9DyBroXohdfZu3zd9oWEx0GK5Y4qG6eKk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}