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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0513b248140f2b1857220287863c3cc8ab1168a27b4b3ca76abe1611386c77bc' 
  AND token = 'hOqRAJYcdGRgZMgSXEZISH2Lq2TdPeWXXrFbw1UuIHo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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