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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bcd577e4016da0b63abf97f6a8c273814517a72a9ba1c28f50cf6a75cce7952f' 
  AND token = 'HqNyXumU41aNZaq1cDsu/Lemh9b1w8QOjJI+j6wx2LM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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