SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1bf7ab62b6f01a3acd1e55fb8fcf3f5715a5edb0b74c22905f763eb7c7cd1fe0' 
  AND token = '1F3B7eZqGvXAGPA8X6jUYVUMzUNLFAv/amy2l5ZgFp0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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