Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec117e1768a72de0d122a6012d06fb45f3a0cefc4f6c6d7e4fa06b6fad2b0e61' 
  AND token = 'kjmkWi9rRBZkDHp9+JaFmPKPn8yhqEPMXsVfsYHFvlI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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