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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3865334f8b8323ca0758a03f598532dd9199c651b0b4d171908fcc89982c026d' 
  AND token = 'ADQO5YAX2l/mTzcHyJ3M+ZG7gTT2AQ4rQERlgCVIc8E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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