Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb926f388e7395530e007bd1c23821f5c6827dbe6441613f611f4c39298bacf6' 
  AND token = '0X4wrOr/QvOOz89uyhS+p5CXNSgpLV+en/8Nzr2LzDA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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