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SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '69fb35d8edde9fb16976967d873cecf49c84cd5e85eb446bc308bb68ab222dde' 
  AND token = '0vTziTEzvqvJhn5ffS9AGkpR8zguzG7wDyNV/TKYGEc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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