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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '94498a09d85bfa20b5e438de5848946a7e9c2a4fbed43964ee3bed9fac324407' 
  AND token = '2t/WeUe/Ex5iKG1hchr78nMGsMA/BXg7Azqc5W6KE/8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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