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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ab07653850b76fbecb76c772a53496d9b2bb17e34a17042dcb67766430c9f61' 
  AND token = 'W+NvZSLO+1suyYfPE+tLAHliKXiUypJQseaf3Wf2fQc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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