Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4fe6690e408dc9ca5a13a74c3176bdcfedc72a51acf38a1c048b3917ec89a051' 
  AND token = 'yIIFAT2xuQKOMQriSD1FMWmAbLaUctBJEe0jwD9L2l0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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