Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc0b89862c6d51eae1ad520740bd8af395dd635952a7429d2416093a34041486' 
  AND token = 'RJbzxuIlXYUA3ocKPMAA7DcJUHIZ+nT2LSnMy1JS63o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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