Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bfd2f0c9d2938f3d43eeb530ce67a280e70176974fd518172d586d3b0bf35873' 
  AND token = 'TzT/A0TA92V5y0UtAxiQ3Qx7DP5jcfFgQ101iOeTick=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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