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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1620576118145f991a5c65f6824a7ae6ae6d2db25cea3c05f99e4fe0019f4177' 
  AND token = 'otlJI1SAJeIvH/5FlVxA3j6xFvhJJH83AJqTVM/yarg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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