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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e5937d0032f1824a57c4df18b32d19236af6b1695817812dc501d69c85157d4' 
  AND token = 'c8HhbVnBTGGFu6VA1F4s0qQdvMgJrJ6hSyf7Yqe388s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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