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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '005e87225b54dd0e0851c5af65b527030246f93eabd6575784d3fd5ce7e7f271' 
  AND token = 'asosp9aIaFuGczkKFvMQTK+clFkhWP8US632/kr+dwg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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