SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2d120534581032f9e86577041e2b6d6454463f577c7064f898b8a29cf7727908' 
  AND token = 'LE68D+wCJcXvmCYpU2bzNX8Lzc1/miHEkAI7o98ZKTU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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