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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ad9f477f85a6fb36a47de266d73fdccf6882d1c4ca9d118acc92e4716a2a828' 
  AND token = '5tzQx2ABfsrE24CHsxHeN2px/GhmcnmwYu6C2LWyRWg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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