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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0dd7d99df63ea3e566b5378d45401f94917ca24ce02b5751961e148f0805ad07' 
  AND token = 'Na4mmMMqRFjzOSX0CluSteATJH2lZaIg2AH1FvW14Vw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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