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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f029c24a1155186095501f9065c9d681724d03ca7aae604be5b1f0e5d589b4ec' 
  AND token = 'Y1wVdo3P7DE+ZdBmy24UA0MvRJ30oHvApzdKVNgaYdo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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