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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '02bf19e2052a982171570875db88370626f31e5c4544053969472b56fef94989' 
  AND token = 'F53V4JRXEjqHNIbAu4feDgOZXX90fobsJjEik0wtbzg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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