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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '180dea85aa6c96f8a6d5aeb0f7d08b29303d60d4f0dc9ce224cc936e440c0740' 
  AND token = 'pJ7EB9L52wWgn2lFJMcXJHCuRwUdfSn6cGtZXTMM56s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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