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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7562cb5d36f57b1ecc965ba63811ee7601c792c255ee1f2ca3174ccbbbf7d2ad' 
  AND token = 'W+nPxk+g1C/fRYLCX1T+4TYUfCvreO0AG0vAi10DzvU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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