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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'acabf6b8ae751bfc815c1e0d73018af2febb8760ce6ae0f47e7119883fbf95e0' 
  AND token = '1dNsko6+sZIlIGNqEYeANb8F4gNLwV8aklNDbuhoyi8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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