Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38bb07b655047d4ae970970f92429d907c63ba46a36bf8fef4571d87f6803a74' 
  AND token = 'bZ2ROBzQ3XOlNPdGsBa+JL4gSxb7qYLb8roFoq782f4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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