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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2aae3967ca6007c58a4ae65b29f19de7aba0f31f32e37f9fe213336a0f774f01' 
  AND token = 'sQ+76owJUs21jVTDrO8fUmy6Y2qW15nktLggp7SJBQw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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