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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd697ef1feac9c082788b2d57032e41c6845d6c00ad7a0159f5769cc94d9db166' 
  AND token = 'q1CdhhAkKBv0sBQxxKLT/xaEjL/zcy7P0nggsce4TVk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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