Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '293edd4d36498dc5cb376e9950e8860e4949cead4aa9328c03131e0a6500db62' 
  AND token = 'wv5924O1yv4Ums4TKdyQzALuBGqi9D8Og7TV70jPFbc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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