SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e984a7822b68b43465ee076d5e232c527695713e6cd489783fb70a4ba8368c8' 
  AND token = 'HiBTsgz7wpnwGzYN1xKGSfEfBmLDWQKGIbUVnQjaO4M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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