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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e2fea6af34c95f242b350d7f7302eb006b18c03b775abc064d76234591d084fc' 
  AND token = 'K2QOeiW8InJ7w/rcnJzOVQRUw5h347b5Q/5g3k3ofrA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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