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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ee1c200b2ad6286bb7cfbd0e158f41dda9d46d32e1208e3c7e3655408badbbb' 
  AND token = 'Svl/q768BF+FFyMEQNcRaNqr9vbrWVfDLPbor8Ardcc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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