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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a0ae265cdf9a9d2712ac0d273f1239c648d1a56264cfd7772b43d479eb4fb254' 
  AND token = 'vu8F/MYQnQmG/a0Jt9FEBOi1GBE5t2ybrt5ArMlC4ok=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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