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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2af313439c7dfb58f34612968365b137e1e458936ae02d5a8c1b7a616277f719' 
  AND token = 'eNgqos1SL/FyfMGDIYSk1F3jEu0SHaNNUeRliuTk03g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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