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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd32fed06db06e5ac371876acef8b24d8b3185ac02ea4312b63ebd6a0c03980ae' 
  AND token = 'b0rULNXQZ0Nq9cc+2s4GkPdkBk5ClXxCnRwo8i/I1cY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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