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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b05d909ee6126984d8015d195f56c224a05462b90777bb07012ef5d471facbc8' 
  AND token = 'BANUX2nM98jJko3nBZN7O9taT4h+J8L0pldF3A/6lRQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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