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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5ccec7282022440cf7ad9fc3f7a47df0140bc7e94ef5314026e90fd128e4b490' 
  AND token = 'FRFEf/sfNc1TcJjOlJF9rwkwYV6RZ7kSnrvGvHW6iCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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