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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '626ffd8017923bc5388097fa989310c73e9ba508138079bc8e74fd6574523ba2' 
  AND token = 'S8ThlEkf5/45CIIpoyJ/cJDkUUWM7zivN0ZfOv3027c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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