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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '95eda9150eb29c53e2a7f634831a7a22e653a8531df7ccf0dd8b1683cdbabc7e' 
  AND token = 'x4Hr0LN7st50I863bZVF1GVZAOexQGJBVkPTwBwnXKo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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